An ion is a particle, such as an atom, that has become charged because it has different numbers of protons and electrons

True or False

Which of the following is the densest layer of the solid Earth? atmosphere crust mantle core

Theories have both an explanatory and a predictive function. a. True b. False

The short vertical parts adjacent to it also reach into the magnetic field and should experience forces. why can we neglect them?

A wave oscillates 50 times per second. What is its frequency?

Is the density of an object constant?

Why does changing the shape of an object have no effect on the density of that object?

2. Vehicle-braking distance is the distance your vehicle travels after you see a problem before you apply the brakes. A. true B. false

On a sky coaster (human pendulum) that reaches 10 meters from it's equilibrium position, a man of 120 kg is able to reach a maximum speed of 18m/s 14m/s 1200m/s 11m/s

two wires each have a current running through them and are placed next to each other. will one wire be affected by a force from the other? and why?

When using a lever, what is the input force called